I need to order a shop manual for my car but in the mean time does anyone know the torque specs on the intake manifold. I am installing a Crawford Upper Manifold on Thursday. Does anyone know where I can get a shop manual? Are there different types or is the dealership a good place to look? I know sometimes dealers don't sell them but everyone says that's the first thing one should buy before doing any major projects. Thanks for any help and yes I did search for these specs before asking, I promise! Thanks!

 

I think it's different for every company. My MD + Spacer torque for upper plenum was 100 ft/lbs.

 

100 ft-lbs?? NFW. Lug nuts only get 75 ft-lbs. That would strip the bolts rights out of the soft aluminum plenum. It's more like 110-120 in-lbs.

You can get the correct FSM for your model year from the Nissan website:
http://www.nissan-techinfo.com/nissan/

Sign up for a one day access ($20) then download the manual(s), they are in PDF format.

[Edit: Oops, wrong pic. Here's the correct one that shows all the plenum bolts. Torque is 9-10 ft-lbs or 108-120 in-lbs.]

 

It's 100 inch lbs for the parameter bolts & 60 inch lbs for the 6 inner bolts..

Follow the tightening sequence listed above.

 

Basically about as tight as you can get it with one hand at the top of the socket wrench (no lever arm torque)... I doubt it will leak - if it does you can try to tighten it further, but hand tight I found works just fine and for me equates to about 60-70 in-lbs of torque

 

This sounds about right. When I installed my polished plenum, I used about 75 inch lbs on all bolts and never had problems. When I installed the 5/16 spacer it was a different story. The specs had to be on the money. 1st time around I had a vaccum leak and had to go back and redo everything.

 

WOW!

 

I think it is called a “nut driver.”

 

Thanks A lot everyone. I appreciate the link for the shop manual Dave! I'm installing a Crawford 1st gen. manifold tomorrow night. I hope to feel some gains! Thanks Again!

 

Thank you i just hope you warned him in time.

 

Thanks so much I was stuck today after installing my powder coat intake manifold , the vehicle was running rough followed the sequence all good now respect